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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #ifndef __ia64_PAGE_H__
  30. #define __ia64_PAGE_H__
  31.  
  32. #include <arch/types.h>
  33. #include <arch/mm/frame.h>
  34.  
  35. #define PAGE_SIZE   FRAME_SIZE
  36. #define PAGE_WIDTH  FRAME_WIDTH
  37.  
  38. #define KA2PA(x)    ((__address) (x))
  39. #define PA2KA(x)    ((__address) (x))
  40.  
  41. #define GET_PTL0_ADDRESS_ARCH()         ((pte_t *) 0)
  42. #define SET_PTL0_ADDRESS_ARCH(ptl0)
  43.  
  44. /** Implementation of page hash table interface. */
  45. #define HT_HASH_ARCH(page, asid)    0
  46. #define HT_COMPARE_ARCH(page, asid, t)  0
  47. #define HT_SLOT_EMPTY_ARCH(t)       1
  48. #define HT_GET_NEXT_ARCH(t)     0
  49. #define HT_SET_NEXT_ARCH(t, s)
  50. #define HT_SET_RECORD_ARCH(t, page, asid, frame, flags)
  51.  
  52. #define REGION_RID_MAIN 0
  53. #define REGION_RID_FIRST_INVALID 16
  54. #define REGION_REGISTERS 8
  55.  
  56. #define VHPT_WIDTH 16         /*64kB*/
  57. #define VHPT_SIZE (1<<VHPT_WIDTH)
  58.  
  59. #define VHPT_BASE 0           /* Must be aligned to VHPT_SIZE */
  60.  
  61. struct VHPT_tag_info
  62. {
  63.     unsigned long long tag       :63;
  64.     unsigned           ti        : 1;
  65. }__attribute__ ((packed));
  66.  
  67. union VHPT_tag
  68. {
  69.     struct VHPT_tag_info tag_info;
  70.     unsigned             tag_word;
  71. };
  72.  
  73. struct VHPT_entry_present
  74. {
  75.  
  76.     /* Word 0 */
  77.     unsigned p              : 1;
  78.     unsigned rv0            : 1;
  79.     unsigned ma             : 3;
  80.     unsigned a              : 1;
  81.     unsigned d              : 1;
  82.     unsigned pl             : 2;
  83.     unsigned ar             : 3;
  84.     unsigned long long ppn  :38;
  85.     unsigned rv1            : 2;
  86.     unsigned ed             : 1;
  87.     unsigned ig1            :11;
  88.    
  89.     /* Word 1 */
  90.     unsigned rv2            : 2;
  91.     unsigned ps             : 6;
  92.     unsigned key            :24;
  93.     unsigned rv3            :32;
  94.    
  95.     /* Word 2 */
  96.     union VHPT_tag tag;       /*This data is here as union because I'm not sure if anybody nead access to areas ti and tag in VHPT entry*/
  97.                             /* But I'm almost sure we nead access to whole word so there are both possibilities*/
  98.     /* Word 3 */                                                   
  99.     unsigned long long next :64; /* This ignored field will be (in my hopes ;-) ) used as pointer in link list of entries with same hash value*/
  100.    
  101. }__attribute__ ((packed));
  102.  
  103. struct VHPT_entry_not_present
  104. {
  105.     /* Word 0 */
  106.     unsigned p              : 1;
  107.     unsigned long long ig0  :52;
  108.     unsigned ig1            :11;
  109.    
  110.     /* Word 1 */
  111.     unsigned rv2            : 2;
  112.     unsigned ps             : 6;
  113.     unsigned long long ig2  :56;
  114.  
  115.    
  116.     /* Word 2 */
  117.     union VHPT_tag tag;       /*This data is here as union because I'm not sure if anybody nead access to areas ti and tag in VHPT entry*/
  118.                             /* But I'm almost sure we nead access to whole word so there are both possibilities*/
  119.     /* Word 3 */                                                   
  120.     unsigned long long next :64; /* This ignored field will be (in my hopes ;-) ) used as pointer in link list of entries with same hash value*/
  121.    
  122. }__attribute__ ((packed));
  123.  
  124. typedef union VHPT_entry
  125. {
  126.     struct VHPT_entry_present        present;
  127.     struct VHPT_entry_not_present    not_present;
  128. }VHPT_entry;
  129.  
  130. extern void page_arch_init(void);
  131.  
  132.  
  133. struct region_register_map
  134. {
  135.   unsigned ve            : 1;
  136.     unsigned r0            : 1;
  137.     unsigned ps            : 6;
  138.     unsigned rid           :24;
  139.     unsigned r1            :32;
  140. }__attribute__ ((packed));
  141.  
  142.  
  143. typedef union region_register
  144. {
  145.     struct region_register_map   map;
  146.     unsigned long long           word;
  147. }region_register;
  148.  
  149. struct PTA_register_map
  150. {
  151.   unsigned ve            : 1;
  152.     unsigned r0            : 1;
  153.     unsigned size          : 6;
  154.     unsigned vf            : 1;
  155.     unsigned r1            : 6;
  156.     unsigned long long base:49;
  157. }__attribute__ ((packed));
  158.  
  159.  
  160. typedef union PTA_register
  161. {
  162.     struct PTA_register_map   map;
  163.     unsigned long long        word;
  164. }PTA_register;
  165.  
  166.  
  167. #endif
  168.